Initial validation & performance analysis of the bearingless double u-core switched reluctance machine topology

Due to the capabilities which switched reluctance machines (SRMs) offer, including simple design, robustness of construction, reliability, low cost and low idle losses, developing and upgrading their structure is a vital issue to expand the industrial applications. During recent years, various structures have been carried out to enhance the efficiency of these type of electrical machines in which double u-core layout has been introduced as one of the viable solutions. In order to upgrade the technology to a bearingless double u-core SRM as a further investigation, this paper presents a feasible demonstrations and performance evaluation of a single phase double u-core SRM under three individual currents for each coil to examine the control and design topology. To this end, it is essential to scrutinize the behaviour of the single phase machine with producing three various duty cycles applied to each coil, and distinguish as a three individual controller coils to work not only as a motor and a generator, but also as a magnetic bearing. Moreover, the impact of varied currents on the force exerted to the rotor has been extracted for subsequent inquiry by a performance tracking of the single phase machine under three individual currents.